NetworkUtil.java

public class NetworkUtil {

    public static boolean isConnected(Context context) {
        ConnectivityManager connectManager =
                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo mobileNetwork = connectManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        NetworkInfo wifiNetwork = connectManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
        NetworkInfo activeNetwork = connectManager.getActiveNetworkInfo();
        return (activeNetwork != null && activeNetwork.isConnected())
                || mobileNetwork.isConnected()
                || wifiNetwork.isConnected();
    }
}